Home / 20,815-45,520

Finding the Third Proportional to 20,815 and 45,520

Calculator

Solution

The third proportional to 20,815 and 45,520 is: 99,546.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,815 : 45,520 = 45,520 : x
  2. Step 2: Convert to fraction form
    20,815/45,520 = 45,520/x
  3. Step 3: Cross multiply
    20,815x = 45,520 × 45,520
  4. Step 4: Simplify right side
    20,815x = 2,072,070,400
  5. Step 5: Solve for x
    x = 2,072,070,400/20,815
  6. Step 6: Final answer
    x = 99,546.98

Related Problems

Find third proportional to 10,407.50 and 22,760
Half scale
Find third proportional to 41,630 and 91,040
Double scale
Find third proportional to 20,817 and 45,524
Similar ratio
Find third proportional to 31,222.50 and 68,280
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.